1 #include <stdio.h>
2 #include <memory>
3
4 class Extra
5 {
6 public:
Extra(int in_one,int in_two)7 Extra (int in_one, int in_two) : m_extra_one(in_one), m_extra_two(in_two) {}
8
9 private:
10 int m_extra_one;
11 int m_extra_two;
12 };
13
14 class A
15 {
16 public:
A(int value)17 A(int value) : m_a_value (value) {}
A(int value,A * client_A)18 A(int value, A* client_A) : m_a_value (value), m_client_A (client_A) {}
19
~A()20 virtual ~A() {}
21
22 virtual void
doSomething(A & anotherA)23 doSomething (A &anotherA)
24 {
25 printf ("In A %p doing something with %d.\n", this, m_a_value);
26 int tmp_value = anotherA.Value();
27 printf ("Also have another A at %p: %d.\n", &anotherA, tmp_value); // Break here in doSomething.
28 }
29
30 int
Value()31 Value()
32 {
33 return m_a_value;
34 }
35
36 private:
37 int m_a_value;
38 std::auto_ptr<A> m_client_A;
39 };
40
41 class B : public Extra, public virtual A
42 {
43 public:
B(int b_value,int a_value)44 B (int b_value, int a_value) : Extra(b_value, a_value), A(a_value), m_b_value(b_value) {}
B(int b_value,int a_value,A * client_A)45 B (int b_value, int a_value, A *client_A) : Extra(b_value, a_value), A(a_value, client_A), m_b_value(b_value) {}
46
~B()47 virtual ~B () {}
48
49 private:
50 int m_b_value;
51 };
52
53 static A* my_global_A_ptr;
54
55 int
main(int argc,char ** argv)56 main (int argc, char **argv)
57 {
58 my_global_A_ptr = new B (100, 200);
59 B myB (10, 20, my_global_A_ptr);
60 B *second_fake_A_ptr = new B (150, 250);
61 B otherB (300, 400, second_fake_A_ptr);
62
63 myB.doSomething(otherB); // Break here and get real addresses of myB and otherB.
64
65 A reallyA (500);
66 myB.doSomething (reallyA); // Break here and get real address of reallyA.
67
68 return 0;
69 }
70